/* ************************************************************
 * OrangeLife Client Tools
 * 
 * Copyright(C) 2015 CURRY Corporation. All Rights Reserved.
 * ************************************************************/
package com.orangelife.utils;

import java.util.Random;

/**
 * 随机数字生成工具类
 * 
 */
public class RandomUtil {

	/**
	 * 获取6位随机数字
	 * 
	 * @return int
	 */
	public static int getNumSex() {
		Random random = new Random();
		return random.nextInt(900000) + 100000;
	}

	/**
	 * 获取字母数字组合随机数
	 * 
	 * @param length 
	 * @return string
	 */
	public static String getStrRandom(int length) {
		String val = "";
		Random random = new Random();

		// 参数length，表示生成几位随机数
		for (int i = 0; i < length; i++) {
			String charOrNum = random.nextInt(2) % 2 == 0 ? "char" : "num";
			// 输出字母还是数字
			if ("char".equalsIgnoreCase(charOrNum)) {
				// 输出是大写字母还是小写字母
				int temp = random.nextInt(2) % 2 == 0 ? 65 : 97;
				val += (char) (random.nextInt(26) + temp);
			} else if ("num".equalsIgnoreCase(charOrNum)) {
				val += String.valueOf(random.nextInt(10));
			}
		}
		return val;
	}

}
